Welcome to the Community, Todd.
I appreciate your idea to this feature helps your business by combining multiple invoices to a specific customer to save you time. However, this feature isn't available yet because each invoice has unique details such as date, term, and other information. In your case, it may look like you'll want to send a statement if you combine those invoices in one.
I will take note of your suggestion regarding combining invoices so that our development team can create a solution for it.
In the meantime, you can have your customer pay all invoices through direct bank transfer. Then, just reflect the payment in QuickBooks and send them the receipt. This is a workaround for now.
- Click on +New and select Receive payment.
- Select the name of the customer in the Payee field.
- Enter the amount you received.
- Put a checkmark beside the invoices that they are paying.
- Choose Save and send to email the receipt.
With regards to adding columns, I'll take note of this as a suggestion for future enhancements as well.
Additionally, please visit this article to learn how to personalize and add specific info to your sales forms: Customize invoices, estimates, and sales receipts in QuickBooks Online.
Please don't hesitate to leave a reply in the comment section if you have further questions about the features of QuickBooks Online. I'm more than happy to assist you. Stay safe.